<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link href="//unpkg.com/layui@2.8.0/dist/css/layui.css" rel="stylesheet">
    <style>
        .demo-login-container {
            width: 320px;
            margin: 21px auto 0;
        }

        .demo-login-other .layui-icon {
            position: relative;
            display: inline-block;
            margin: 0 2px;
            top: 2px;
            font-size: 26px;
        }
        .layui-form.err{
            position: absolute;
            display: none;
        }
        span.active{
            display: block;
        }
    </style>
</head>

<body>

    <form class="layui-form">
        <span style="color:red;display: none;" class="active">用户名或者密码错误!请重试</span>
        <div class="demo-login-container">
            <div class="layui-form-item">
                <div class="layui-input-wrap">
                    <div class="layui-input-prefix">
                        <i class="layui-icon layui-icon-username"></i>
                    </div>
                    <input type="text" name="username" id="username" value="" lay-verify="required" placeholder="用户名"
                        lay-reqtext="请填写用户名" autocomplete="off" class="layui-input" lay-affix="clear">
                </div>
            </div>
            <div class="layui-form-item">
                <div class="layui-input-wrap">
                    <div class="layui-input-prefix">
                        <i class="layui-icon layui-icon-password"></i>
                    </div>
                    <input type="password" name="password" id="password" value="" lay-verify="required" placeholder="密   码"
                        lay-reqtext="请填写密码" autocomplete="off" class="layui-input" lay-affix="eye">
                </div>
            </div>
            <!-- <div class="layui-form-item">
                <div class="layui-row">
                    <div class="layui-col-xs7">
                        <div class="layui-input-wrap">
                            <div class="layui-input-prefix">
                                <i class="layui-icon layui-icon-vercode"></i>
                            </div>
                            <input type="text" name="captcha" value="" lay-verify="required" placeholder="验证码"
                                lay-reqtext="请填写验证码" autocomplete="off" class="layui-input" lay-affix="clear">
                        </div>
                    </div>
                    <div class="layui-col-xs5">
                        <div style="margin-left: 10px;">
                            <img src="https://www.oschina.net/action/user/captcha"
                                onclick="this.src='https://www.oschina.net/action/user/captcha?t='+ new Date().getTime();">
                        </div>
                    </div>
                </div>
            </div> -->
            <!-- <div class="layui-form-item">
                <input type="checkbox" name="remember" lay-skin="primary" title="记住密码">
                <a href="form.html#forget" style="float: right; margin-top: 7px;">忘记密码？</a>
            </div> -->
            <div class="layui-form-item">
                <button class="layui-btn layui-btn-fluid" lay-submit lay-filter="demo-login">登录</button>
            </div>
            <div class="layui-form-item demo-login-other">
                <label>社交账号登录</label>
                <span style="padding: 0 21px 0 6px;">
                    <a href="javascript:;"><i class="layui-icon layui-icon-login-qq" style="color: #3492ed;"></i></a>
                    <a href="javascript:;"><i class="layui-icon layui-icon-login-wechat"
                            style="color: #4daf29;"></i></a>
                    <a href="javascript:;"><i class="layui-icon layui-icon-login-weibo" style="color: #cf1900;"></i></a>
                </span>
                或 <a href="form.html#reg">注册帐号</a></span>
            </div>
        </div>
    </form>
    <script src="//unpkg.com/layui@2.8.0/dist/layui.js"></script>
    <script src="./reg.js"></script>
    <script>
        // 拿到用户输入的内容   表单.value
        const formele = document.querySelector('form');
        console.log(formele);
        const nameele =  document.getElementById('username');
        const passele =  document.getElementById('password');
        const spanele = document.querySelector('span');



        formele.onsubmit = function(e){
            e.preventDefault();

            const username = nameele.value;
            const password = passele.value;

            if(!username || !password){
                return alert('请填写用户名或者密码')
            }

            if(!testName(username) || !testPass(password)){
                return alert('用户名或者密码不符合要求')
            }


            const xhr = new XMLHttpRequest();

            xhr.open('post','http://localhost:8080/users/login');

            xhr.onload = function(){
                const res = JSON.parse(xhr.responseText);
                if(res.code === 0 ){
                    spanele.style.display = 'block';
                    return;
                }
                
                // console.log(res);

                //保存信息到浏览器本地存储 

                window.localStorage.setItem('token',res.token);
                window.localStorage.setItem('id',res.user.id);


                //走到这里说明登录成功了
                window.location.href = './index.html'

            }

            xhr.setRequestHeader('content-type','application/x-www-form-urlencoded')
            xhr.send(`username=${username}&password=${password}`);            
        }


    </script>
</body>

</html>